-// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
-package org.ibex;
-import org.ibex.translators.*;
+// Copyright 2000-2005 the Contributors, as shown in the revision logs.
+// Licensed under the GNU General Public License version 2 ("the License").
+// You may not use this file except in compliance with the License.
+
+package org.ibex.graphics;
import org.ibex.util.*;
import java.io.*;
import java.util.Hashtable;
-
-import org.ibex.js.JSExn;
+import org.ibex.js.*;
+import org.ibex.nestedvm.*;
+import org.ibex.plat.*;
+import org.ibex.nestedvm.Runtime;
// FEATURE: this could be cleaner
/** encapsulates a single font (a set of Glyphs) */
public class Font {
- private Font(Stream stream, int pointsize) { this.stream = stream; this.pointsize = pointsize; }
-
- private static boolean glyphRenderingTaskIsScheduled = false;
+ private Font(JS stream, int pointsize) { this.stream = stream; this.pointsize = pointsize; }
public final int pointsize; ///< the size of the font
- public final Stream stream; ///< the stream from which this font was loaded
+ public final JS stream; ///< the stream from which this font was loaded
public int max_ascent; ///< the maximum ascent, in pixels
public int max_descent; ///< the maximum descent, in pixels
boolean latinCharsPreloaded = false; ///< true if a request to preload ASCII 32-127 has begun
- Glyph[] glyphs = new Glyph[65535]; ///< the glyphs that comprise this font
+ public Glyph[] glyphs = new Glyph[65535]; ///< the glyphs that comprise this font
public abstract static class Glyph {
protected Glyph(Font font, char c) { this.font = font; this.c = c; }
public int width = -1; ///< the width of the glyph
public int height = -1; ///< the height of the glyph
public byte[] data = null; ///< the alpha channel samples for this font
+ public String path = null; // FIXME this should be shared across point sizes
void render() {
- if (!isLoaded) try { freetype.renderGlyph(this); } catch (IOException e) { Log.info(Freetype.class, e); }
+ if (!isLoaded) try { renderGlyph(this); } catch (IOException e) { Log.info(Font.class, e); }
isLoaded = true;
}
}
// Statics //////////////////////////////////////////////////////////////////////
- static final Freetype freetype = new Freetype();
- static final Hashtable glyphsToBeCached = new Hashtable();
- static final Hashtable glyphsToBeDisplayed = new Hashtable();
- private static Cache fontCache = new Cache(100);
- public static Font getFont(Stream stream, int pointsize) {
- Font ret = (Font)fontCache.get(stream, new Integer(pointsize));
- if (ret == null) fontCache.put(stream, new Integer(pointsize), ret = new Font(stream, pointsize));
+ static final Queue toBeRasterized = new Queue(300);
+ static final Queue toBeDisplayed = new Queue(300);
+ private static Basket.Map fonts = new Basket.Hash();
+ public static Font getFont(JS stream, int pointsize) {
+ Basket.Map m = (Basket.Map)fonts.get(stream);
+ Font ret = null;
+ if (m != null) ret = (Font)m.get(new Integer(pointsize));
+ else fonts.put(stream, m = new Basket.Hash());
+ if (ret == null) m.put(new Integer(pointsize), ret = new Font(stream, pointsize));
return ret;
}
* Rasterize the glyphs of <code>text</code>.
* @returns <code>(width<<32)|height</code>
*/
- public long rasterizeGlyphs(String text, PixelBuffer pb, int textcolor, int x, int y, int cx1, int cy1, int cx2, int cy2) {
+ public String rasterizeGlyphs(String text) {
+ StringBuffer path = new StringBuffer(text.length() * 50);
+ for(int i=0; i<text.length(); i++) {
+ final char c = text.charAt(i);
+ Glyph g = glyphs[c];
+ if (g == null) glyphs[c] = g = Platform.createGlyph(this, c);
+ g.render();
+ path.append(g.path);
+ }
+ return path.toString();
+ }
+ public long rasterizeGlyphs(String text, PixelBuffer pb, Affine a, Mesh h, int fg, int bg) {
int width = 0, height = 0;
if (!latinCharsPreloaded) { // preload the Latin-1 charset with low priority (we'll probably want it)
- for(int i=48; i<57; i++) if (glyphs[i]==null) glyphsToBeCached.put(glyphs[i]=Platform.createGlyph(this, (char)i),"");
- for(int i=32; i<47; i++) if (glyphs[i]==null) glyphsToBeCached.put(glyphs[i]=Platform.createGlyph(this, (char)i),"");
- for(int i=57; i<128; i++) if (glyphs[i]==null) glyphsToBeCached.put(glyphs[i]=Platform.createGlyph(this, (char)i),"");
- if (!glyphRenderingTaskIsScheduled) {
- Scheduler.add(glyphRenderingTask);
- glyphRenderingTaskIsScheduled = true;
- }
+ for(int i=48; i<57; i++) if(glyphs[i]==null) toBeRasterized.append(glyphs[i]=Platform.createGlyph(this, (char)i));
+ for(int i=32; i<47; i++) if(glyphs[i]==null) toBeRasterized.append(glyphs[i]=Platform.createGlyph(this, (char)i));
+ for(int i=57; i<128; i++) if(glyphs[i]==null) toBeRasterized.append(glyphs[i]=Platform.createGlyph(this, (char)i));
latinCharsPreloaded = true;
}
+ a = a==null ? null : a.copy();
for(int i=0; i<text.length(); i++) {
final char c = text.charAt(i);
Glyph g = glyphs[c];
if (g == null) glyphs[c] = g = Platform.createGlyph(this, c);
g.render();
- if (pb != null) pb.drawGlyph(g, x + width, y + g.font.max_ascent - g.baseline, cx1, cy1, cx2, cy2, textcolor);
+ if (a!=null) a.premultiply(Affine.translate(0, g.font.max_ascent - g.baseline));
+ if (pb != null) pb.drawGlyph(g, a, h, fg, bg);
+ if (a!=null) a.premultiply(Affine.translate(0, -1 * (g.font.max_ascent - g.baseline)));
width += g.advance;
+ if (a!=null) a.premultiply(Affine.translate(g.advance, 0));
height = java.lang.Math.max(height, max_ascent + max_descent);
}
return ((((long)width) << 32) | (long)(height & 0xffffffffL));
}
// FEATURE do we really need to be caching sizes?
- private static Cache sizeCache = new Cache(1000);
+ private static Cache sizeCache = new Cache(1000, true);
public int textwidth(String s) { return (int)((textsize(s) >>> 32) & 0xffffffff); }
public int textheight(String s) { return (int)(textsize(s) & 0xffffffffL); }
public long textsize(String s) {
Long l = (Long)sizeCache.get(s);
if (l != null) return ((Long)l).longValue();
- long ret = rasterizeGlyphs(s, null, 0, 0, 0, 0, 0, 0, 0);
+ long ret = rasterizeGlyphs(s, null, null, null, 0, 0);
sizeCache.put(s, new Long(ret));
return ret;
}
- static final Scheduler.Task glyphRenderingTask = new Scheduler.Task() { public void perform() {
- // FIXME: this should be a low-priority task
- glyphRenderingTaskIsScheduled = false;
- if (glyphsToBeCached.isEmpty()) return;
- Glyph g = (Glyph)glyphsToBeCached.keys().nextElement();
- if (g == null) return;
- glyphsToBeCached.remove(g);
- Log.debug(Font.class, "glyphRenderingTask rendering " + g.c + " of " + g.font);
+ public Glyph getGlyph(char c) {
+ rasterizeGlyphs(c+"", null, null, null, 0, 0);
+ Glyph g = glyphs[c];
g.render();
- Log.debug(Glyph.class, " done rendering glyph " + g.c);
- glyphRenderingTaskIsScheduled = true;
- Scheduler.add(this);
- } };
+ return g;
+ }
+
+ static { new Thread() { public void run() {
+ while(true) {
+ Glyph g = (Glyph)toBeRasterized.remove(true);
+ if (g == null) continue;
+ Log.debug(Font.class, "glyphRenderingTask rendering " + g.c + " of " + g.font);
+ g.render();
+ Log.debug(Glyph.class, " done rendering glyph " + g.c);
+ }
+ } }.start(); }
+
+
+ // FreeType Interface //////////////////////////////////////////////////////////////////////////////
+
+ // FEATURE: use streams, not memoryfont's
+ // FEATURE: kerning pairs
+ private static final Runtime rt;
+ private static JS loadedStream;
+ private static int loadedStreamAddr;
+
+ static {
+ try {
+ rt = (Runtime)Class.forName("org.ibex.util.MIPSApps").newInstance();
+ } catch(Exception e) {
+ throw new Error("Error instantiating freetype: " + e);
+ }
+ rt.start(new String[]{"freetype"});
+ rt.execute();
+ rtCheck();
+ }
+
+ private static void rtCheck() { if(rt.getState() != Runtime.PAUSED) throw new Error("Freetype exited " + rt.exitStatus()); }
+
+ private static void loadFontByteStream(JS res) {
+ if(loadedStream == res) return;
+
+ try {
+ Log.info(Font.class, "loading font " + JSU.str(res));
+ InputStream is = JSU.getInputStream(res);
+ byte[] fontstream = InputStreamToByteArray.convert(is);
+ rt.free(loadedStreamAddr);
+ loadedStreamAddr = rt.xmalloc(fontstream.length);
+ rt.copyout(fontstream, loadedStreamAddr, fontstream.length);
+ if(rt.call("load_font", loadedStreamAddr, fontstream.length) != 0)
+ throw new RuntimeException("load_font failed"); // FEATURE: better error
+ rtCheck();
+ loadedStream = res;
+ } catch (Exception e) {
+ // FEATURE: Better error reporting (thow an exception?)
+ Log.info(Font.class, e);
+ }
+ }
+
+ private static synchronized void renderGlyph(Font.Glyph glyph) throws IOException {
+ try {
+ Log.debug(Font.class, "rasterizing glyph " + glyph.c + " of font " + glyph.font);
+ if (loadedStream != glyph.font.stream) loadFontByteStream(glyph.font.stream);
+
+ long start = System.currentTimeMillis();
+
+ rt.call("render",glyph.c,glyph.font.pointsize);
+ rtCheck();
+
+ glyph.font.max_ascent = rt.getUserInfo(3);
+ glyph.font.max_descent = rt.getUserInfo(4);
+ glyph.baseline = rt.getUserInfo(5);
+ glyph.advance = rt.getUserInfo(6);
+
+ glyph.width = rt.getUserInfo(1);
+ glyph.height = rt.getUserInfo(2);
+
+ glyph.data = new byte[glyph.width * glyph.height];
+ int addr = rt.getUserInfo(0);
+ rt.copyin(addr, glyph.data, glyph.width * glyph.height);
+
+ byte[] path = new byte[rt.getUserInfo(8)];
+ rt.copyin(rt.getUserInfo(7), path, rt.getUserInfo(8));
+ glyph.path = new String(path);
+ glyph.path += " m " + (64 * glyph.advance) + " 0 ";
+
+ glyph.isLoaded = true;
+ } catch (Exception e) {
+ // FEATURE: Better error reporting (thow an exception?)
+ Log.info(Font.class, e);
+ }
+ }
}
projects / org.ibex.core.git / blobdiff